You will need 4 pieces of 608zz- /8x22x7mm/ bearing from the inline skates and 8 pieces of M3x 12mm screws for attaching the cabins. If the bearings on the axles are loose, you can glue them or press them with caps. Some parts have a pause in the g-code to change the color.
Filaments used: Prusament PLA Viva La Bronze
Prusament PLA Galaxy Silver